1429257 has 4 divisors (see below), whose sum is σ = 1905680. Its totient is φ = 952836.

The previous prime is 1429249. The next prime is 1429261. The reversal of 1429257 is 7529241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1429257 - 2³ = 1429249 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1429247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238207 + ... + 238212.

It is an arithmetic number, because the mean of its divisors is an integer number (476420).

2^1429257 is an apocalyptic number.

It is an amenable number.

1429257 is a deficient number, since it is larger than the sum of its proper divisors (476423).

1429257 is an equidigital number, since it uses as much as digits as its factorization.

1429257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476422.

The product of its digits is 5040, while the sum is 30.

The square root of 1429257 is about 1195.5153700392. The cubic root of 1429257 is about 112.6428013751.

The spelling of 1429257 in words is "one million, four hundred twenty-nine thousand, two hundred fifty-seven".